KpKP13 Protein target profile

Putative metabolite transport protein

Accession: KP13_04575

Gene: AHE44450.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GT74
Length 468
Pocket druggability (P2Rank · AlphaFold DB model) 0.958
Direct ligand evidence 0 73 total records
Functional annotation 0 EC 5 GO
Target summary

Target candidate with partial support; inspect missing evidence before prioritizing.

Automated synthesis of the evidence currently loaded. Review the underlying records before prioritizing this protein.

Terms and data sources used on this page

PDB: experimentally determined structures from the Protein Data Bank. These are the strongest structural evidence, but may cover only part of the protein.

AlphaFold DB model: a precomputed predicted structure downloaded from AlphaFold Database/UniProt, not an experiment performed here.

ColabFold model: a predicted structure generated for this workspace; interpret it with coverage and confidence.

pLDDT: confidence score for predicted structures. High values support local geometry; low values mean the region should not drive pocket interpretation.

FPocket / P2Rank: software tools that predict possible ligand-binding pockets on a 3D structure. They are useful screening signals, not experimental validation.

Druggability: a pocket-based estimate of whether a small molecule could bind productively. It does not mean a drug already exists.

PDB ligand: a compound observed in an experimental structure. Direct same-protein records are stronger than homolog-transferred records.

ChEMBL: a public database of measured compound bioactivity. Direct entries are stronger than entries transferred from similar proteins.

ZINC: a purchasable-compound database. Here it marks proposed candidates from chemical similarity, not measured binders.

LigQ / LigQ_2: an internal Target pipeline step that gathers PDB, ChEMBL, and ZINC ligand evidence for each protein.

Off-target: sequence similarity to proteins we prefer not to hit, such as human proteins or beneficial gut microbiome proteins.

DEG: Database of Essential Genes. A match suggests the protein resembles genes known to be essential in other organisms.

Roary / CoreCruncher: pan-genome tools used to decide whether a gene is core across analyzed strains or accessory/strain-specific.

EC / GO: functional annotations: EC describes enzyme reactions; GO describes biological process, molecular function, or cellular component.

KEGG pathway: a curated metabolic route label used here to group reactions imported from the metabolic model.

Chokepoint: a metabolic reaction that is the only producer or consumer of a metabolite in the imported model.

Prioritization evidence

Selectivity, essentiality, structural confidence, conservation, and predicted binding-site evidence.

Off-target risk

Human off-target
Hit
Human identity (%)
28.276 Lower values reduce human off-target concern.
Human E-value
1.93e-09
Gut microbiome similarity
0.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
N
DEG identity (%)
0.0 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT
89.87 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

P2Rank's binding-site probability is the primary druggability signal shown across the app; FPocket's druggability score is shown alongside it for comparison. Both estimate small-molecule pocket quality after applying the curated structure priority — neither is experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

Druggability (P2Rank) 0.958
Structure A0A0H3GT74
Pocket Pocket 1
Druggability (FPocket) 0.391
Structure A0A0H3GT74
Pocket Pocket 7
ColabFold model
P2Rank 0.977 · Pocket 1
FPocket 0.595 · Pocket 26
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 24 / 4744 genomes with a hit
Prevalence 0.5%

Sequence

Primary amino-acid sequence viewer.

MSTTQVLGETPYASPGQPHASLTGRIDALPASFGLWSFITLLSLGGFFELYDLFQTGYISAGLLAEGIFHTGQAGIFGIADQAAFASATFMGLFIGASLLAPLADKLGRRLTFMVALAWYGLFSLLMATQSSAEGVIFFRFLVGIGLGIELVTIDTYLSEWVPTHLRNKAFAFAFFIQFLSVPAVALMSWMLVPTTLFGLSGWRWVIIFGALFSLAIWFIRKKLPESARWLESKGRHDDAHTVMCEMEARCGLTPSPKHAHAAQSVVKRGTFREIWAPEYRQRTLMLMVMNFFQAIGFFGFGNWLPALLSGQGASITHSLLYAFFITLAYPLGCLFCTRFVHRFENKWQIVLSALMTVIFGTLFALQNSPILLVICGFMITWSNAWLTISYHAYQAEVFPTHIRARAVGFCYSFSRLSTAVTSILIGIILQYAGTPGVISFIVVSMLMVMLSVGIFGPRTRGIRLENI

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

5
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0022857 Enables the transfer of a substance, usually a specific substance or a group of related substances, from one side of a membrane to the other.
  • GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • GO:0046943 Enables the transfer of carboxylic acids from one side of a membrane to the other. Carboxylic acids are organic acids containing one or more carboxyl (COOH) groups or anions (COO-).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

54 records
Show feature table
Start End DB Term Name
410 432 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
319 341 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
320 341 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
29 51 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
142 167 ProSitePatterns PS00217 Sugar transport proteins signature 2.
142 167 InterPro IPR005829 Sugar transporter, conserved site
100 116 ProSitePatterns PS00216 Sugar transport proteins signature 1.
100 116 InterPro IPR005829 Sugar transporter, conserved site
80 84 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
39 455 CDD cd17316 MFS_SV2_like
458 468 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
191 201 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
41 468 Pfam PF00083 Sugar (and other) transporter
41 468 InterPro IPR005828 Major facilitator, sugar transporter-like
348 365 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
412 434 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
58 80 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
159 169 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
306 319 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
221 284 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
111 133 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
25 467 SUPERFAMILY SSF103473 MFS general substrate transporter
25 467 InterPro IPR036259 MFS transporter superfamily
438 457 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
202 220 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
287 309 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
132 136 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
342 347 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
85 104 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
105 110 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
38 461 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
38 461 InterPro IPR020846 Major facilitator superfamily domain
52 57 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
390 409 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
137 159 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
58 79 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
371 389 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
33 51 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
137 158 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
111 131 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
85 104 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 32 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
369 391 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
36 466 PANTHER PTHR23508 CARBOXYLIC ACID TRANSPORTER PROTEIN HOMOLOG
285 305 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
32 468 Gene3D G3DSA:1.20.1250.20 MFS general substrate transporter like domains
32 468 InterPro IPR036259 MFS transporter superfamily
438 457 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
366 370 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
203 220 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
171 193 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
170 190 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
348 365 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
433 437 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.

3D structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; AlphaFold DB and ColabFold models typically cover the full protein but remain computational predictions.

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Pocket score High Medium Low
How colors and pocket overlays are used
Uniform protein color marks the displayed model as a single molecular object.
Experimental PDB structures may be colored by chain to distinguish subunits or copies present in the file.
Pocket colors and alpha spheres are evidence overlays for predicted binding cavities; they are not alternative protein chains.
'Alpha spheres' is FPocket's own cavity-shape geometry, imported when available and aligned with the loaded structure.
'Pocket atoms'/'Predicted site atoms' show the pocket's residue atoms instead: P2Rank reports residues rather than alpha spheres, and FPocket falls back to this when alpha-sphere geometry is unavailable or doesn't align.
'No pocket geometry' means neither alpha spheres nor residue-position data could be found for that pocket; the layer just highlights the same residues as 'Nearby residues'.
Pocket details Inspect a specific pocket, or open the full viewer

Binding pockets · P2Rank

Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1
0.958
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.439
Likely same site as FPocket 3 1.7 Å 8 shared residues 100% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.229
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.198
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Surrounding area
Pocket 5 P2Rank #5
0.139
Show in viewer
Surrounding area

Binding pockets · FPocket

Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Pocket 1 FPocket #7
0.391
Show in viewer
Surrounding area
Pocket 2 FPocket #3
0.209
Likely same site as P2Rank 2 1.7 Å 8 shared residues 100% of smaller site
Show in viewer
Surrounding area
All structural evidence 0 experimental · 2 predicted

Structural evidence

0 + 2

Experimental PDB entries plus predicted AlphaFold DB or ColabFold models. Click Switch to display a different loaded structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
AlphaFold DB AF_A0A0H3GT74
AlphaFold DB full sequence Viewing
ColabFold KP13_04575
ColabFold full sequence Loaded

Ligand evidence

Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.

73 records
Chemistry signal

Bioactivity evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 23 records from similar proteins
Structural ligands 0 0 loaded crystals
Measured bioactivity 23 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
CHEMBL339858 ChEMBL via homolog pchembl 6.96 (~109.6 nM) 355.5 Da · LogP 5.99 · TPSA 7.1 Open detail ChEMBL
CHEMBL2074851 ChEMBL via homolog · pchembl 6.89 (~128.8 nM) Detail ChEMBL
CHEMBL2074704 ChEMBL via homolog · pchembl 6.75 (~177.8 nM) Detail ChEMBL
CHEMBL790 ChEMBL via homolog · pchembl 6.68 (~208.9 nM) Detail ChEMBL
CHEMBL1197556 ChEMBL via homolog · pchembl 6.44 (~363.1 nM) Detail ChEMBL

Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

Show only:
Ligand UniProt (homolog) pchembl MW · LogP · TPSA Lipinski PAINS SMILES
CHEMBL339858 ChEMBL Q63089 6.96 ~109.6 nM 355.5 Da LogP 5.99 TPSA 7.1 1 viol. ✓ Clean CC(C)N1/C(=C\c2cc[n+](C(C)C)c3ccccc23)C=Cc2cccc…
CHEMBL2074851 ChEMBL Q63089 6.89 ~128.8 nM 391.9 Da LogP 1.36 TPSA 19.5 ✓ Ro5 Alert CC[n+]1c(CC2C=C(C)N=C(c3ccccc3)N2C)ccc2ccccc21.…
CHEMBL2074704 ChEMBL Q63089 6.75 ~177.8 nM 298.6 Da LogP 6.56 TPSA 0.0 1 viol. ✓ Clean CCCCC[N+](CCCCC)(CCCCC)CCCCC
CHEMBL790 ChEMBL O15245 6.68 ~208.9 nM 505.5 Da LogP 4.18 TPSA 167.6 2 viol. ✓ Clean N=C(NCCCCCCNC(=N)NC(=N)Nc1ccc(Cl)cc1)NC(=N)Nc1c…
CHEMBL1197556 ChEMBL Q63089 6.44 ~363.1 nM 327.5 Da LogP 5.04 TPSA 7.1 1 viol. Alert CCN1/C(=C/c2ccc3ccccc3[n+]2CC)C=Cc2ccccc21
C0R ChEMBL Q9R0W2 6.41 ~389.0 nM 346.5 Da LogP 2.67 TPSA 74.6 ✓ Ro5 ✓ Clean C[C@]12CCC(=O)C=C1CC[C@@H]3[C@@H]2[C@H](C[C@]4(…
CLU ChEMBL O15245 6.26 ~549.5 nM 230.1 Da LogP 2.17 TPSA 36.4 ✓ Ro5 ✓ Clean c1cc(c(c(c1)Cl)N=C2NCCN2)Cl
CHEMBL30 ChEMBL O08966 6.23 ~588.8 nM 252.3 Da LogP 0.60 TPSA 88.9 ✓ Ro5 Alert CN/C(=N\CCSCc1nc[nH]c1C)NC#N
CHEMBL311617 ChEMBL Q63089 6.10 ~794.3 nM 170.2 Da LogP 2.18 TPSA 3.9 ✓ Ro5 ✓ Clean C[n+]1ccc(-c2ccccc2)cc1
CHEMBL4062501 ChEMBL O15245 6.05 ~891.3 nM 191.3 Da LogP 1.89 TPSA 64.4 ✓ Ro5 ✓ Clean CC(C)(C)c1ccc(N=C(N)N)cc1
QI9 ChEMBL Q63089 6.05 ~891.3 nM 324.4 Da LogP 3.17 TPSA 45.6 ✓ Ro5 ✓ Clean COc1ccc2c(c1)c(ccn2)[C@H]([C@@H]3C[C@@H]4CC[N@]…
7BA ChEMBL O15245 316.4 Da LogP 3.60 TPSA 57.2 ✓ Ro5 ✓ Clean COc1ccc(cc1O)/C=C\c2cc(c(c(c2)OC)OC)OC
CHEMBL1206 ChEMBL O15245 312.5 Da LogP 5.02 TPSA 6.5 1 viol. Alert CCN(CC)C(C)CN1c2ccccc2Sc2ccccc21
CHEMBL172513 ChEMBL O76082 161.2 Da LogP -1.81 TPSA 60.4 ✓ Ro5 ✓ Clean C[N+](C)(C)CC(O)CC(=O)[O-]
CHEMBL21640 ChEMBL O15245 223.3 Da LogP 3.12 TPSA 12.0 ✓ Ro5 ✓ Clean c1ccc(CC2NCCc3ccccc32)cc1
CHEMBL2425619 ChEMBL O15245 218.1 Da LogP -1.11 TPSA 0.0 ✓ Ro5 ✓ Clean C[14CH2][N+]([14CH2]C)([14CH2]C)[14CH2]C.[Br-]
CHEMBL4077758 ChEMBL O76082 534.5 Da LogP -1.61 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCCCC(=O)Nc1ccn(…
CHEMBL4085610 ChEMBL O76082 590.6 Da LogP -0.05 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCCCCCCCC(=O)Nc1…
CHEMBL4095790 ChEMBL O76082 506.5 Da LogP -2.39 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCC(=O)Nc1ccn([C…
CHEMBL4103546 ChEMBL O76082 562.6 Da LogP -0.83 TPSA 180.1 2 viol. ✓ Clean C[N+](C)(C)CC(CC(=O)[O-])OC(=O)CCCCCCC(=O)Nc1cc…
CHEMBL461101 ChEMBL O15245 442.5 Da LogP 4.56 TPSA 114.6 ✓ Ro5 Alert CC1=NN(c2ccc(C)c(C)c2)C(=O)/C1=N\Nc1cccc(-c2ccc…
CHEMBL9324 ChEMBL O15245 130.3 Da LogP 1.88 TPSA 0.0 ✓ Ro5 ✓ Clean CC[N+](CC)(CC)CC
THA ChEMBL O15245 198.3 Da LogP 2.70 TPSA 38.9 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c3c(n2)CCCC3)N

PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.

Cross-references

External database identifiers for this protein, its structures, ligands, and metabolic reactions.